浏览器嵌入，国旗文件

2021-04-09 09:19:04 +08:00
1 parent e7a3214cb5
commit 07feba912c
@@ -0,0 +1,89 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+[RequireComponent(typeof(ScrollRect))]
+public class ScrollRectAutoScroll : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
+{
+    public float scrollSpeed = 10f;
+    private bool mouseOver = false;
+
+    private List<Selectable> m_Selectables = new List<Selectable>();
+    private ScrollRect m_ScrollRect;
+
+    private Vector2 m_NextScrollPosition = Vector2.up;
+    void OnEnable()
+    {
+        if (m_ScrollRect)
+        {
+            m_ScrollRect.content.GetComponentsInChildren(m_Selectables);
+        }
+    }
+    void Awake()
+    {
+        m_ScrollRect = GetComponent<ScrollRect>();
+    }
+    void Start()
+    {
+        if (m_ScrollRect)
+        {
+            m_ScrollRect.content.GetComponentsInChildren(m_Selectables);
+        }
+        ScrollToSelected(true);
+    }
+    void Update()
+    {
+        // Scroll via input.
+        InputScroll();
+        if (!mouseOver)
+        {
+            // Lerp scrolling code.
+            m_ScrollRect.normalizedPosition = Vector2.Lerp(m_ScrollRect.normalizedPosition, m_NextScrollPosition, scrollSpeed * Time.deltaTime);
+        }
+        else
+        {
+            m_NextScrollPosition = m_ScrollRect.normalizedPosition;
+        }
+    }
+    void InputScroll()
+    {
+        if (m_Selectables.Count > 0)
+        {
+            if (Input.GetButtonDown("Horizontal") || Input.GetButtonDown("Vertical") || Input.GetButton("Horizontal") || Input.GetButton("Vertical"))
+            {
+                ScrollToSelected(false);
+            }
+        }
+    }
+    void ScrollToSelected(bool quickScroll)
+    {
+        int selectedIndex = -1;
+        Selectable selectedElement = EventSystem.current.currentSelectedGameObject ? EventSystem.current.currentSelectedGameObject.GetComponent<Selectable>() : null;
+
+        if (selectedElement)
+        {
+            selectedIndex = m_Selectables.IndexOf(selectedElement);
+        }
+        if (selectedIndex > -1)
+        {
+            if (quickScroll)
+            {
+                m_ScrollRect.normalizedPosition = new Vector2(0, 1 - (selectedIndex / ((float)m_Selectables.Count - 1)));
+                m_NextScrollPosition = m_ScrollRect.normalizedPosition;
+            }
+            else
+            {
+                m_NextScrollPosition = new Vector2(0, 1 - (selectedIndex / ((float)m_Selectables.Count - 1)));
+            }
+        }
+    }
+    public void OnPointerEnter(PointerEventData eventData)
+    {
+        mouseOver = true;
+    }
+    public void OnPointerExit(PointerEventData eventData)
+    {
+        mouseOver = false;
+        ScrollToSelected(false);
+    }
+}